- Probe BCM57780.

- In case the parent is bge(4), don't set the Jumbo frame settings unless
  the MAC actually is Jumbo capable as otherwise the PHY might not have the
  corresponding registers implemented. This is also in line with what the
  Linux tg3 driver does.

PR:		165032
Submitted by:	Alexander Milanov
Obtained from:	OpenBSD
MFC after:	3 days

sys/dev/mii/brgphy.c

@@ -146,6 +146,7 @@ static const struct mii_phydesc brgphys[] = {
 	MII_PHY_DESC(BROADCOM3, BCM5719C),
 	MII_PHY_DESC(BROADCOM3, BCM5720C),
 	MII_PHY_DESC(BROADCOM3, BCM57765),
+	MII_PHY_DESC(BROADCOM3, BCM57780),
 	MII_PHY_DESC(xxBROADCOM_ALT1, BCM5906),
 	MII_PHY_END
 };
@@ -225,7 +226,8 @@ brgphy_attach(device_t dev)
 				sc->mii_flags |= MIIF_HAVEFIBER;
 			}
 			break;
-		} break;
+		}
+		break;
 	case MII_OUI_BROADCOM2:
 		switch (sc->mii_mpd_model) {
 		case MII_MODEL_BROADCOM2_BCM5708S:
@@ -942,7 +944,8 @@ brgphy_reset(struct mii_softc *sc)
 		if (bge_sc->bge_phy_flags & BGE_PHY_JITTER_BUG)
 			brgphy_fixup_jitter_bug(sc);
 
-		brgphy_jumbo_settings(sc, ifp->if_mtu);
+		if (bge_sc->bge_flags & BGE_FLAG_JUMBO)
+			brgphy_jumbo_settings(sc, ifp->if_mtu);
 
 		if ((bge_sc->bge_phy_flags & BGE_PHY_NO_WIRESPEED) == 0)
 			brgphy_ethernet_wirespeed(sc);

sys/dev/mii/miidevs

@@ -179,6 +179,7 @@ model BROADCOM2 BCM5784		0x003a BCM5784 10/100/1000baseT PHY
 model BROADCOM2 BCM5709C	0x003c BCM5709 10/100/1000baseT PHY
 model BROADCOM2 BCM5761		0x003d BCM5761 10/100/1000baseT PHY
 model BROADCOM2 BCM5709S	0x003f BCM5709S 1000/2500baseSX PHY
+model BROADCOM3 BCM57780	0x0019 BCM57780 1000BASE-T media interface
 model BROADCOM3 BCM5717C	0x0020 BCM5717C 1000BASE-T media interface
 model BROADCOM3 BCM5719C	0x0022 BCM5719C 1000BASE-T media interface
 model BROADCOM3 BCM57765	0x0024 BCM57765 1000BASE-T media interface